Assignee
HARPER INTERNATIONAL CORP
US·6 granted patents·126 citations·filing 1998–1999
Top patents by PatentIndex Score
6 records- 0176US6042370AGraphite rotary tube furnaceHARPER INTERNATIONAL CORP·Filed 1999·Granted Mar 28, 2000·48 cites·20 claims
- 0274US5997289ARotary calciner with mixing flightsHARPER INTERNATIONAL CORP·Filed 1998·Granted Dec 7, 1999·35 cites·7 claims
- 0355US5908291AContinuous cross-flow rotary kilnHARPER INTERNATIONAL CORP·Filed 1998·Granted Jun 1, 1999·14 cites·12 claims
- 0446US5906483ARotary film calcinerHARPER INTERNATIONAL CORP·Filed 1998·Granted May 25, 1999·11 cites·11 claims
- 0541US5927969ABatch system cross-flow rotary calcinerHARPER INTERNATIONAL CORP·Filed 1998·Granted Jul 27, 1999·10 cites·17 claims
- 0637US6031207ASintering kilnHARPER INTERNATIONAL CORP·Filed 1999·Granted Feb 29, 2000·8 cites·15 claims
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